Bug 60656 - fix image dimensions

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1863602 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/hemf/record/emf/HemfMisc.java

@@ -24,9 +24,7 @@ import static org.apache.poi.hemf.record.emf.HemfFill.readXForm;
 import static org.apache.poi.hemf.record.emf.HemfRecordIterator.HEADER_SIZE;
 
 import java.awt.geom.AffineTransform;
-import java.awt.geom.NoninvertibleTransformException;
 import java.awt.geom.Point2D;
-import java.awt.geom.Rectangle2D;
 import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -666,34 +664,8 @@ public class HemfMisc {
             final AffineTransform tx;
             switch (modifyWorldTransformMode) {
                 case MWT_LEFTMULTIPLY:
-
-                    AffineTransform wsTrans;
-                    final Rectangle2D win = prop.getWindow();
-                    boolean noSetWindowExYet = win.getWidth() == 1 && win.getHeight() == 1;
-                    if (noSetWindowExYet) {
-                        // TODO: understand world-space transformation [MSDN-WRLDPGSPC]
-                        // experimental and horrible solved, because the world-space transformation behind it
-                        // is not understood :(
-                        // only found one example which had landscape bounds and transform of 90 degress
-
-                        try {
-                            wsTrans = xForm.createInverse();
-                        } catch (NoninvertibleTransformException e) {
-                            wsTrans = new AffineTransform();
-                        }
-
-                        Rectangle2D emfBounds = header.getBoundsRectangle();
-
-                        if (xForm.getShearX() == -1.0 && xForm.getShearY() == 1.0) {
-                            // rotate 90 deg
-                            wsTrans.translate(-emfBounds.getHeight(), emfBounds.getHeight());
-                        }
-                    } else {
-                        wsTrans = adaptXForm(xForm, ctx.getTransform());
-                    }
-
                     tx = ctx.getTransform();
-                    tx.concatenate(wsTrans);
+                    tx.concatenate(adaptXForm(xForm, ctx.getTransform()));
                     break;
                 case MWT_RIGHTMULTIPLY:
                     tx = ctx.getTransform();

src/scratchpad/src/org/apache/poi/hemf/usermodel/HemfPicture.java

@@ -18,6 +18,8 @@
 package org.apache.poi.hemf.usermodel;
 
 
+import static java.lang.Math.abs;
+
 import java.awt.Graphics2D;
 import java.awt.Shape;
 import java.awt.geom.AffineTransform;
@@ -31,6 +33,7 @@ import java.util.List;
 import java.util.Spliterator;
 import java.util.function.Consumer;
 
+import org.apache.poi.hemf.draw.HemfDrawProperties;
 import org.apache.poi.hemf.draw.HemfGraphics;
 import org.apache.poi.hemf.record.emf.HemfHeader;
 import org.apache.poi.hemf.record.emf.HemfRecord;
@@ -96,13 +99,12 @@ public class HemfPicture implements Iterable<HemfRecord> {
     }
 
     /**
-     * Returns the bounding box in device-independent units. Usually this is taken from the placeable header.
+     * Returns the bounding box in device-independent units - usually this is in .01 millimeter units
      *
-     * @return the bounding box
+     * @return the bounding box in device-independent units
      */
     public Rectangle2D getBounds() {
-        HemfHeader header = (HemfHeader)getRecords().get(0);
-        Rectangle2D dim = header.getFrameRectangle();
+        Rectangle2D dim = getHeader().getFrameRectangle();
         double x = dim.getX(), y = dim.getY();
         double width = dim.getWidth(), height = dim.getHeight();
         if (dim.isEmpty() || Math.rint(width) == 0 || Math.rint(height) == 0) {
@@ -131,17 +133,8 @@ public class HemfPicture implements Iterable<HemfRecord> {
      * @return the image size in points
      */
     public Dimension2D getSize() {
-        final Rectangle2D bounds = getBounds();
-
-        if (bounds.isEmpty()) {
-            return new Dimension2DDouble(100,100);
-        }
-
-        final double coeff = (double) Units.EMU_PER_CENTIMETER / Units.EMU_PER_POINT / 10.;
-        double width = Math.abs(bounds.getWidth()*coeff);
-        double height = Math.abs(bounds.getHeight()*coeff);
-
-        return new Dimension2DDouble(width, height);
+        final Rectangle2D b = getHeader().getBoundsRectangle();
+        return Units.pixelToPoints(new Dimension2DDouble(abs(b.getWidth()), abs(b.getHeight())));
     }
 
     private static double minX(Rectangle2D bounds) {
@@ -153,20 +146,22 @@ public class HemfPicture implements Iterable<HemfRecord> {
     }
 
     public void draw(Graphics2D ctx, Rectangle2D graphicsBounds) {
-        final HemfHeader header = (HemfHeader)getRecords().get(0);
-
         final Shape clip = ctx.getClip();
         final AffineTransform at = ctx.getTransform();
         try {
-            Rectangle2D emfBounds = header.getBoundsRectangle();
+            Rectangle2D emfBounds = getHeader().getBoundsRectangle();
 
             // scale output bounds to image bounds
-            ctx.translate(minX(graphicsBounds), minY(graphicsBounds));
+            ctx.translate(graphicsBounds.getCenterX(), graphicsBounds.getCenterY());
             ctx.scale(graphicsBounds.getWidth()/emfBounds.getWidth(), graphicsBounds.getHeight()/emfBounds.getHeight());
-            ctx.translate(-minX(emfBounds), -minY(emfBounds));
+            ctx.translate(-emfBounds.getCenterX(), -emfBounds.getCenterY());
 
-            int idx = 0;
             HemfGraphics g = new HemfGraphics(ctx, emfBounds);
+            HemfDrawProperties prop = g.getProperties();
+            prop.setViewportOrg(emfBounds.getX(), emfBounds.getY());
+            prop.setViewportExt(emfBounds.getWidth(), emfBounds.getHeight());
+
+            int idx = 0;
             for (HemfRecord r : getRecords()) {
                 try {
                     g.draw(r);